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Superconducting joint for magnetic resonance superconducting magnet and method of making the same

A technology of superconducting joints and superconducting magnets, which is applied in the manufacture/processing of superconductor devices, the usage of superconductor elements, superconducting/high-conducting conductors, etc., and can solve the problems of unstable superconductivity, loss of superconductivity, and critical transmission Current reduction and other issues, to achieve the effect of small attenuation, good anti-interference, good shielding effect

Active Publication Date: 2016-01-20
WUHAN ZHONGKE IND RES INST OF MEDICAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the background magnetic field where the superconducting joint is located is very high, the superconductivity of the superconducting joint is unstable, and its critical transmission current will decrease or even lose its superconductivity.

Method used

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  • Superconducting joint for magnetic resonance superconducting magnet and method of making the same
  • Superconducting joint for magnetic resonance superconducting magnet and method of making the same
  • Superconducting joint for magnetic resonance superconducting magnet and method of making the same

Examples

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Embodiment 1

[0038] Such as figure 1As shown, in this embodiment, the superconducting joint used for the magnetic resonance superconducting magnet includes a first superconducting wire 1 and a second superconducting wire 2, and the ends of the two superconducting wires contain a plurality of superconducting filaments 3, The superconducting filament 3 is used as the connection lead wire of the superconducting joint. When the superconducting wire is connected, the superconducting filament 3 is connected by corresponding contact. Preferably, in this embodiment, the superconducting filament 3 is connected by twisting correspondingly, and its outer wrapping There is a FeSe superconducting material 4, the FeSe superconducting material 4 is obtained from FeSe powder 5 through a pressing and curing annealing process, and after the pressing and curing annealing process, the FeSe superconducting material 4 and the superconducting filament 3 are closely combined . In addition to the FeSe superconduc...

Embodiment 2

[0045] Such as Figure 7 As shown, in this embodiment, the superconducting joint used for the magnetic resonance superconducting magnet includes a first superconducting wire 1 and a second superconducting wire 2, and the ends of the two superconducting wires contain a plurality of superconducting filaments 3, The superconducting filament 3 is used as the connection lead wire of the superconducting joint. When the superconducting wire is connected, the superconducting filament 3 is connected in corresponding contact, and each pair of superconducting filaments connected in corresponding contact can be wrapped with an inert metal thin tube 8 ( Figure 7 Only one of the thin inert metal tubes is shown in the figure), all the thin inert metal tubes 8 can also be wrapped with thick inert metal tubes 9, and FeSe Superconducting materials4. In this embodiment, the exposed part of the superconducting filament 3 can be wrapped with an inert metal thick tube 9, and filled with FeSe mate...

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Abstract

The invention discloses a superconducting connecter for a magnetic resonance superconducting magnet and a manufacturing method of the superconducting connector. The superconducting connector comprises a plurality of superconducting wires, the tail end of each superconducting wire comprises a plurality of superconducting fine wires, the superconducting fine wires of the superconducting wires are in corresponding contact connection, and each pair of the superconducting fine wires in the corresponding contact connection are wrapped by FeSe superconducting materials. According to the superconducting connector for the magnetic resonance superconducting magnet and the manufacturing method of the superconducting connector, the superconducting fine wires are solidified through the FeSe superconducting materials, the FeSe superconducting materials are melted and tightly combined with the superconducting fine wires under high temperature, wood metal or PbBi alloy materials are replaced, the FeSe superconducting materials and the superconducting fine wires all enter a superconducting state and maintain superconducting connection, and thus the superconducting connecter is capable of working stably in a highfield and has low resistance.

Description

technical field [0001] The invention relates to a superconducting joint and a manufacturing method thereof, in particular to a superconducting joint used for a magnetic resonance superconducting magnet and a manufacturing method thereof. Background technique [0002] The low resistance of the superconducting joint is an important parameter of the superconducting magnet system, especially for superconducting magnets in MRI, which guarantees high stability and low attenuation. At present, the superconducting joint in the superconducting magnet used in MRI is mainly to weave the superconducting wire inside the superconducting wire through acid etching and cleaning, and then potting it in a metal cup with Wood metal or PbBi alloy to form a potting joint. , or configure other solders such as tin and other metal alloys in Wood's metal or lead-bismuth alloy to pot superconducting joints, such as the method used in Patent No. CN1015935. The technology of this superconducting joint i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F5/04H01B12/00H01L39/24
CPCY02E40/60
Inventor 王相得
Owner WUHAN ZHONGKE IND RES INST OF MEDICAL SCI CO LTD
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